Rotary road-grader.



C. P. BETTENGA.

ROTARY ROAD GRADER.

APPLICATION FILED NOV. 7, 1913.

1,131,902. Patented Mar.16,1915.

THE NORRIS PETERS CQ. PHOTO-LITHD.. WASHINGTON. D. Cv

JENT

CREN'O P. BETTENGA, 0F WADENA, MINNESUTA.

ROTARY R-QAD-GRADER.

Specification of Letters Patent.

Passed Mar. 1c, 1915.

Application filed November 7,1913. Serial N0. 799,723.

To all whom it may concern lie it known that 1, Crime P. BETTENGA, acitizen of the United States, residing at ll adena, in the county ofWadena and State of Minnesota, have invented certain new'and usefulImprovements in Rotary Road- Graders; and I do hereby declare thefollowing to be a full, clear, and exact description of the invention,such as will enable others skilled in the art to which it appertains tomake and use the same.

My invention relates to certain new and useful improvements in roadgraders, and has for its object to provide a grader of simple andinexpensive construction which shall be, at the same time thoroughlypractical and durable in operation, and which shall upon the removal ofmaterial from the road bed, deposit the same upon a rotating platformwhere it shall be disintegrated and subsequently delivered from saidplatform to any desired locality.

With these ends in view my invention consists in the details ofconstruction and arrangement hereinafter more fully set forth.

In order that those skilled in the art to which my invention appertainsmay know how to make and use the same, I will proceed to describe thesame, referring by numerals to the accompanying drawing in which thedrawing shows a top or plan view of a grader embodying the features ofmy invention.

Similar reference numerals indicate like parts in the drawing.

1, represents a frame of substantially L- form, braced as shown at 2mounted upon two forward wheels 3, a rear wheel 3 and a rear tractionwheel 4:- Upon the frame 1 is mounted a rotating table 5, and plow 6 andalso a sod-breaker or earth disintegrator, consisting of a series ofcircular knives 7 mounted upon a shaft 8, journaled in the ends ofsuitable arms 9, 10 and 11 secured at one end to the frame 1, and ascraper 12, rigidly connected with the frame serves to scrape off theearth, etc, as the table is rotated in an obvious manner. The supportingshaft or axle 13 of the traction wheel 4:, is connected with the frame1, by suitable bearings 14, and a gear 15 fixed to the wheel 4.- meshingwith the pinion 16 on the axle. The inner end of the axle 13, isprovided with a beveled pinion 17, meshing with a horizontal gear 18connected with the rotating table 5, by radial arms 19.

From this construction and arrangement, it will be seen that as thegrader is moved forward the traction of wheel 1 will cause the table tobe rotated in the direction in dicated by the arrow, and that thefrictional contact of the circular knives 7, with the table 5, willcause them to rotate upon their shaft 8 and break any sod ordisintegrate any earth deposited upon the table. The forward end of theframe 1, is pivotally connected by an ordinary king pin with the axle ofthe front wheels 3, and to this axle is con nected a pole 20, doubletree 21, and swingle trees 22. The rear wheel 3 is mounted upon an axle23, journaled in a frame 24: suitably secured to the rear portion of theframe 1, and to its forward right angled portion by an angle brace 25.

The plow 6, is mounted upon the frame 2%, in such relation to therotating table 5 that the sod or earth lifted by the plow will throughthe medium of its moldboard deposit the sod or earth upon the rotatingtable which during its movement in the direction of the arrow is firstout up and disintegrated by the knives 7, and finally removed from thetable by the stationary scraper 12. The plow is adapted to be raised andlowered as occasion may demand by a hand lever 26, suitably connectedwith the plow hanger.

From the construction, arrangement and operation of my improved roadgrader it will be readily understood that I am enabled to remove fromthe surface of the road at any particular locality any excess ofvertical profile and deposit the same upon the rotating table, and asthe machine can be guided and drawn to any given locality, the materialtaken from the surface and delivered upon the table can be scraped offand deposited at any suitable place. It will also be seen that myimproved grader is not only simple and of inexpensive construction butthat it is also strong and durable and not liable to get out of order.

The rotating table 5 supported and rigidly mounted upon the radialspokes 19, is preferably formed at its inner circumference with a guard27, to prevent the material {1 posited upon said table from drifting1nwardly and causing it to be positively carried to the scraper 12. Anordinary drivers seat 28, is erected upon the frame 1, at any desiredlocality with reference to the draft team.

Having described the construction and operation of my improved roadgrader what I claim as new and desire to secure by Letters Patent is:

In a rotary road grader, an L- shaped frame supported on carrying Wheelsand a traction wheel, a rotary table mounted to revolve on the frame,means positively operated by the traction wheel to rotate the rotarytable, a plow arranged to deposit earth upon the rotary table, ascraperarranged to contact with the upper surface of the rotary table todischarge earth, and rotary disin- 'tegrating cutters independentlymounted on the frame in contact with the upper surface of the rotarytable between the plow and the 15 onnno P. BETTENGA.

Witnesses W. E. PARKER, GEO. E. HARRIS.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents 7 Washington, D. 0.

